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##### General Discussion / Re: The Venting Thread

« Last post by**clean**on

*May 06, 2021, 06:50:03 PM*»

I am giving a take home exam this term (following through since last year when we went to Covid time). I gave them the final exam 10 days ago (maybe 11). The exam is not until Monday.

Last night a student writes, "As I am working through these questions, I'm realizing that a lot of these are more advanced than anything we covered in class. What do you suggest would help? Would the homework be an okay place to study? "

The exam is almost exclusively problems.

Now I am finding that any questions I respond to include the page/figure/chart from the text, the day the class discussed the issue (class recordings are available for review and all the paper notes are available as well), and I include the problems that were assigned from the text. It has certainly slowed my response time, but the answers are now VERY thorough!

Still, I m annoyed that I am using time when I get questions that are really from prerequisite classes! It is bad enough that some of these students (Junior level FINANCE majors) didnt learn this in the prereq class, but I covered these topics myself! (How many times, and in How Many Courses does it take before they actually LEARN how to do things like this??)

So I get questions like, "I calculated the variance by square rooting the std dev that I got from the calculator, is that not correct? " (note that they are allowed to use Excel if they choose).

" If we have already calculated the variance of the market and the variance of asset A, wouldn't covariance be the product of those two variances? "

"I was reviewing how to solve for standard deviation and on the in class examples the probabilities were whole like .30 and .40 so when we "tricked the calculator" as you said, we entered the numbers 3 times for the .30 and four times for .40, it makes since because it is out of 100% (10 number sets).

However, on my exam I got half percentages like 0.25 and 0.15 for probability, how do I enter the numbers in to solve it correctly? I don't get it because I can't enter the numbers 2 and a half times? Additionally, I was reviewing the first exam and on this same type of problem it gave whole probabilities like .10, .20, .30, and .40 also understandable to enter into the calculator like the in-class example. I just don't understand how to solve it with half number probabilities like 0.15 and 0.25? Please provide some guidance on this.

I replied, and was given a follow up statement - "I have divided my probabilities by "5" and am left with 5, 3, and 12 these numbers do not add up to 10? The example you gave in the last email is understandable .25, .50, and .25 would be 1, 2, 1 in the calculator.

....The least common denominator between .15, .25, and .60 is 300[.... and Variance is the square root of standard deviation.... from FINANCE majors!

THESE FAILURES ARE NOT MY FAULT!!!

While I have spent a lot of CLASS TIME to make sure that they are supposed to know HOW to do things (and not rely on preprogrammed calculator or Excel functions), they seem lost! They are unable to do them WITH OR WITHOUT a calculator!!

Exams are Monday. My preliminary, targeted RETIREMENT DATE is in 'only' 1334 DAYS!!!

If my portfolio holds up, and these sorts of questions, along with the students falsely claiming that the exam questions are much harder than anything done in class (which means when they get to

Bastards!

Last night a student writes, "As I am working through these questions, I'm realizing that a lot of these are more advanced than anything we covered in class. What do you suggest would help? Would the homework be an okay place to study? "

The exam is almost exclusively problems.

Now I am finding that any questions I respond to include the page/figure/chart from the text, the day the class discussed the issue (class recordings are available for review and all the paper notes are available as well), and I include the problems that were assigned from the text. It has certainly slowed my response time, but the answers are now VERY thorough!

Still, I m annoyed that I am using time when I get questions that are really from prerequisite classes! It is bad enough that some of these students (Junior level FINANCE majors) didnt learn this in the prereq class, but I covered these topics myself! (How many times, and in How Many Courses does it take before they actually LEARN how to do things like this??)

So I get questions like, "I calculated the variance by square rooting the std dev that I got from the calculator, is that not correct? " (note that they are allowed to use Excel if they choose).

" If we have already calculated the variance of the market and the variance of asset A, wouldn't covariance be the product of those two variances? "

"I was reviewing how to solve for standard deviation and on the in class examples the probabilities were whole like .30 and .40 so when we "tricked the calculator" as you said, we entered the numbers 3 times for the .30 and four times for .40, it makes since because it is out of 100% (10 number sets).

However, on my exam I got half percentages like 0.25 and 0.15 for probability, how do I enter the numbers in to solve it correctly? I don't get it because I can't enter the numbers 2 and a half times? Additionally, I was reviewing the first exam and on this same type of problem it gave whole probabilities like .10, .20, .30, and .40 also understandable to enter into the calculator like the in-class example. I just don't understand how to solve it with half number probabilities like 0.15 and 0.25? Please provide some guidance on this.

I replied, and was given a follow up statement - "I have divided my probabilities by "5" and am left with 5, 3, and 12 these numbers do not add up to 10? The example you gave in the last email is understandable .25, .50, and .25 would be 1, 2, 1 in the calculator.

**The least common denominator between .15, .25, and .60 is 300**, which gives me decimals not whole numbers to enter into the calculator. "....The least common denominator between .15, .25, and .60 is 300[.... and Variance is the square root of standard deviation.... from FINANCE majors!

THESE FAILURES ARE NOT MY FAULT!!!

While I have spent a lot of CLASS TIME to make sure that they are supposed to know HOW to do things (and not rely on preprogrammed calculator or Excel functions), they seem lost! They are unable to do them WITH OR WITHOUT a calculator!!

Exams are Monday. My preliminary, targeted RETIREMENT DATE is in 'only' 1334 DAYS!!!

If my portfolio holds up, and these sorts of questions, along with the students falsely claiming that the exam questions are much harder than anything done in class (which means when they get to

**Watch ME**solve the problems!!) Retirement may become a very welcome option!!Bastards!